Caleffi

Caleffi Z-one™ ZSR103 3 Zone Pump Relay, 24 VAC

CLFZSR103 MFG #: ZSR103
Caleffi Z-one™ ZSR103 3 Zone Pump Relay, 24 VAC
  • Voltage Rating: 24 VAC
  • Dimensions: 11 in L x 3 in W x 9-1/4 in H
  • Display Type: LED
  • Frequency Rating: 50/60
  • Manufacturer: Caleffi
  • Manufacturer #: ZSR103
  • Power Rating: 120, 120 VAC
  • Series: ZSR
  • Type: 3 Zone
The ZSR series is a zone pump and boiler operating control for multiple zone hydronic heating systems. The ZSR series interfaces with low voltage thermostats, or any other low voltage controllers having a switching action. The ZSR series controls up to 6 zone pumps (depending on model selected) and a primary pump. It has LED indicators to provide functional status and easy system troubleshooting.

Caleffi Z-one™ Zone Pump Relay, 3 Zone, Series: ZSR, 24 VAC, 120 VAC, 50/60 Hz, LED, 11 in L x 3 in W x 9-1/4 in H
  • Features
  • Product Videos
  • Installer friendly - Ample room for terminations, large screw terminals, automatic resettable fuse, snap-in transformers
  • Application versatility - 3 selectable 120 VAC auxiliary switches for enabling pumps and boilers, dedicated pump outputs, unlimited zone expansion
  • Extremely reliable design - Clutch-protected drive train, durable synchronous motor, millions installed in North America
  • Compact design with snap-on actuator with a convenient in-line push button, removable bottom cap allows for easy in-pipe service
  • Application versatility - Hot water, chilled water and low-pressure steam
  • Compatible with 2, 3 and 4-wire thermostats or other low voltage controllers with switching action
  • Heavy duty, sealed relays
  • 1 primary pump output and 3 to 6 (model dependent) zone pump outputs (120 VAC/5 A each)
  • Zone priority selectable with 1 hr time-out feature
  • Convenient R, W, C and T, T, COM dual labeling at thermostat terminals
  • System pump status (on/off) during priority selectable
  • Dry contacts (XX,AUX, ZONE 1 E/S) capable of switching line voltage
  • High capacity 12 VA or 20 VA transformer (model dependent)
  • Automatic resettable fuse on 24 V circuit
  • Selectable post purge
  • Selectable pump exercising
  • 3 pump ground terminals for simplified wiring
  • Expandable to unlimited number of zones using simple 3-wire connection between controls
  • Large screw terminals for ease of wiring
  • Front panel LED indicator light for functional status